<template>
  <view v-if="goods_info.goods_name" class="goods-detail-container">
    <!-- 轮播图 -->
    <swiper :indicator-dots="true" :autoplay="true" :interval="3000" :duration="1000" :circular="true">
      <swiper-item v-for="(item,i) in goods_info.pics" :key="item.pics_id">
        <image :src="item.pics_big" mode="" @click="preview(i)"></image>
      </swiper-item>
    </swiper>
    <!-- 商品信息 -->
    <view class="goods-info-box">
      <!-- 价格 -->
      <view class="price">
        ￥{{goods_info.goods_price}}
      </view>
      <!-- 主体 -->
      <view class="goods-info-body">
        <!-- 名称 -->
        <view class="goods-name">
          {{goods_info.goods_name}}
        </view>
        <!-- 收藏 -->
        <view class="favi">
          <uni-icons type="star" size="18" color="gray"></uni-icons>
          <text>收藏</text>
        </view>
      </view>
      <!-- 运费 -->
      <view class="yf">
        快递：免运费
      </view>
    </view>
    <!-- 详细图文 -->
    <rich-text :nodes="goods_info.goods_introduce"></rich-text>
    <!-- 商品导航 -->
    <view class="goods_nav">
      <uni-goods-nav :fill="true" :options="options" :buttonGroup="buttonGroup" @click="onClick"
        @buttonClick="buttonClick" />
    </view>
  </view>
</template>

<script>
  import {
    mapMutations,
    mapGetters
  } from 'vuex'
  export default {
    computed: {
      ...mapGetters('m_cart', ['total'])
    },
    watch: {
      total: {
        handler(newVal) {
          const findResult = this.options.find(x => x.text === '购物车')
          if (findResult) findResult.info = newVal
        },
        immediate: true
      }
    },
    data() {
      return {
        // 商品数据
        goods_info: {},
        // 左侧按钮组的配置对象
        options: [{
          icon: 'shop',
          text: '店铺'
        }, {
          icon: 'cart',
          text: '购物车',
          info: 0
        }],
        // 右侧按钮组的配置对象
        buttonGroup: [{
            text: '加入购物车',
            backgroundColor: '#ff0000',
            color: '#fff'
          },
          {
            text: '立即购买',
            backgroundColor: '#ffa200',
            color: '#fff'
          }
        ]
      };
    },
    onLoad(options) {
      const goods_id = options.goods_id
      this.getGoodsDetail(goods_id)
    },
    methods: {
      // 这样引入可以不用commit
      ...mapMutations('m_cart', ['addToCart']),
      async getGoodsDetail(goods_id) {
        const {
          data
        } = await uni.$http.get('/api/public/v1/goods/detail', {
          goods_id
        })
        // 请求失败
        if (data.meta.status !== 200) return uni.$showMsg()
        // 成功
        // 去除图间隙以及转换格式
        data.message.goods_introduce = data.message.goods_introduce.replace(/<img /g, '<img style="display:block;" ')
          .replace(/webp/g, 'jpg')
        this.goods_info = data.message
      },
      // 点击图片
      preview(i) {
        // 大图预览
        uni.previewImage({
          current: i, // 从索引开始
          urls: this.goods_info.pics.map(x => x.pics_big) // 全部图片
        })
      },
      // 点击导航栏左侧
      onClick(e) {
        if (e.content.text === '购物车') {
          uni.switchTab({
            url: '/pages/cart/cart'
          })
        }
      },
      // 点击导航栏右侧
      buttonClick(e) {
        if (e.content.text === '加入购物车') {
          const goods = {
            goods_id: this.goods_info.goods_id,
            goods_name: this.goods_info.goods_name,
            goods_price: this.goods_info.goods_price,
            goods_count: 1,
            goods_small_logo: this.goods_info.goods_small_logo,
            goods_state: true
          }
          this.addToCart(goods)
        }
      }
    }
  }
</script>

<style lang="scss">
  .goods-detail-container {
    padding-bottom: 50px;

    swiper {
      height: 750rpx;

      swiper-item {
        image {
          width: 100%;
          height: 100%;
        }
      }
    }

    .goods-info-box {
      padding: 10px;
      padding-right: 0;

      .price {
        color: #c00000;
        font-size: 18px;
        margin: 10px 0;
      }

      .goods-info-body {
        display: flex;
        justify-content: space-between;

        .goods-name {
          font-size: 13px;
          margin-right: 10px;
        }

        .favi {
          width: 120px;
          font-size: 12px;
          display: flex;
          flex-direction: column;
          justify-content: center;
          align-items: center;
          border-left: 1px solid #efefef;
          color: gray;
        }
      }

      .yf {
        font-size: 12px;
        color: gray;
        margin: 10px 0
      }
    }

    .goods_nav {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
    }
  }
</style>
